Shuttle-guiding device in circular looms



yJune 1,4, 1949. H. PELCE 2,473,172

SHUTTLE-GUIDING DEVICE IN GIRGULAR LOOMS Enea Feb. 21, 1947 Patented June 14, 1949 SHUTTLE-GUIDING DEVICE CIRCULAR LOOMS Henri Pelc, Paris, France, assignor to Societe dite: Saint Freres (Societe Anonyme), Paris,

France Application February 21, 1947, Serial No. 730,029 In France January 17, 1947 Claims.

This invention has for its object improvements in the rail in lcircular looms, that is, in the guide track of the shuttles used more especially for weaving cotton or silk.

In the guiding device providing the subjectmatter of the U. S. Patent No. 2,398,957 dated February 14, 1945, the shuttles slide on the warp threads while being guided on a circular track which, for instance, may be made of hard wood.

In contrast thereto, in a prior arrangement described in the French Patent No. 861,172, the shuttles are guided on needles and the only rubbing action undergone by the threads is that of the largest section of the shuttles.

It has now been found that it is possible to combine the advantages of either arrangement while using the rail described in the U. S. Patent No. 2,398,957 by taking care that the thread shall never be pressed between the shuttle and the track on which the latter is moved.

With this end in view the rail according to this invention, instead of being made of hard wood or some equivalent substance such as pressed plastics or horn, is constituted by a material comprizing preferably short and still bristles, for instance a brush.

The shuttle is guided in its motion on these two brush tracks in which the bristles are suiciently thick-set, stii and resistant to provide that a resistance is opposed to the mass of the shuttle which is equivalent to that of a continuous solid. However, if the threads in the warp be considered individually, it will be appreciated that none of them can be wedged or damaged since if the pressure at any point becomes excessive the thread will sink without damage between the bristles in the brush while the shuttle as a whole does not undergo any vertical displacement.

For constructional reasons it may be advantageous to use velvet-like fabrics with very stiff pile instead of rigid wire brushes. There is an advantage, with brushes as well as with velvet, in using bristles made of some hard and slippery substance such as synthetic resin threads, notably such polyamide resins of quaternary composition as are known by the name of nylon and all such similar substances that can be produced in counts leading to very stiff threads.

An embodiment of the arrangement according to this invention is illustrated in the appended drawing.

Figure 1 is a vertical sectional view, and

Figure 2 a section taken on line II-II in Fig. 1.

The shuttle I provided with the shoe 2 is tted at the sole thereof with sliding skids 3 adapted 2 to slide on a ring of platens 4 embedded in annular supports 5 and E. A bottom brush 30 is secured to support 6 and a top brush 3| is attached to the support 5. The threads 9 and l0 sink between the bristles of the brushes.

Of course, various modifications may be made in the arrangement and make-up of the brushes and fabrics of various kinds that may be used and which are suitable for the guiding of the shuttle. It should be understood that these modications do not depart from the scope of the invention.

What I claim as my invention and desire to secure by Letters Patent is:

1. In a circular weaving loom comprising a shuttle raceway composed of a ring of platens retained between a pair of parallel annular supports, adapted to guide the` shuttle in its circular motion and across the intervals of which the warp threads can be shifted up and down, the provision on the inside of either support of a. lining of bristles in the interstices of which the threads belonging to either sheet of the warp can lodge clear of the shuttle in either open condition of the shed.

2. In a circular weaving loom comprising an annular shuttle raceway having a U-shaped section and composed of a ring of platens retained between a pair of parallel annular supports, adapted to guide the shuttle in its circular motion and across the intervals of which the warp threads can be shifted up and down, the provision on the inside of either support of a lining of bristles to be engaged at their free ends respectively by one or the other side of the shuttle shoe during the circular travel of the same and in the interstices of which the threads belonging to either sheet of the warp can lodge clear of the shuttle in either open condition of the shed.

3. A lining as claimed in claim 2 made of stiffpile velvet.

4. A lining as claimed in claim 2 made of brushlike fabric.

5. A lining as claimed in claim 2 made up of brushes.

HENRI PELCE.

REFERENCES CITED The following referenices are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,090,080 Turner Aug. 17, 1937 2,248,282 Pelce July 8, 1941 2,398,957 Pelce Apr. 23, 1946 

